Short Answer 
New treatments for pregnant women are designed to prevent complications arising from RH incompatibility, which occurs when an RH-negative mother carries an RH-positive baby. Understanding the RH factor is crucial for ensuring the health of both the mother and the developing child.
Step 1: Understanding the Rhesus Factor
The Rhesus (RH) factor is an important blood antigen found in humans and other primates. It determines whether someone’s blood type is positive or negative. The compatibility of the RH factor is crucial because mismatches can lead to serious health issues, such as severe reactions to blood transfusions.
Step 2: Risks of RH Incompatibility
When a person with RH-positive blood receives a transfusion from an RH-negative donor, it can trigger a dangerous immune response, leading to blood coagulation. This can occur within minutes and might prove fatal. Such risks highlight the critical need for compatible blood transfusions.
Step 3: Preventing Harm During Pregnancy
Recognizing the RH factor’s significance has paved the way for new treatments for pregnant women. If a mother has an RH-negative blood type and is carrying an RH-positive baby, healthcare providers can administer treatments to prevent complications. These treatments help ensure the well-being of both the mother and the developing child.